Examine source code of FoxComments

{
  "manifest_version": 2,
  "name": "FoxComments",
  "version": "1.0.1",
  "description": "Opens all the HTML comments of the current page on a new tab",
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>",
    "webNavigation",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "32": "icons/icons8-fox-32.png"
    }
  },
  "web_accessible_resources": [
    "view-source.html",
    "view-source.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{73371072-b8c2-4dd8-b8eb-6031eabdcccd}"
    }
  }
}